This is a lady's Quartz Pendant in 10K gold, as tested. It is approximately 37 X 26 X 16.5 mm, and an Emerald shape, step cut Quartz. Green to yellowish in colour, very light tone and saturation. With a total weight of 31.4 grams. The chain is 9k, stamped 333, yellow gold Figaro link chain, and is approximately 24 inches in length, with a weight of approximately 21.4 grams. It is appraised at around $3300, and a great gift at the asking price.